Password Strength Regular Express...

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Hi,
I need PasswordStrengthRegularExpression to allow password greater than 8 char with 1 numeric, 1 special character, 1 alphabet but exclude "&" in Special character

Posted 10-Feb-13 22:58pm

Srimathi89

Updated 10-Feb-13 23:08pm

Mehdi Gholam

v2

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Orcun Iyigun 11-Feb-13 5:04am

Why don't you use AJAX Tool Kit's Password Strength[^]?

Srimathi89 11-Feb-13 5:11am

I dont wanna use Ajax control toolkit in my application. Please provide me PasswordStrengthRegularExpression to be added in web.config

phil.o 11-Feb-13 5:14am

Regular Expressions are not the best solution to enforce some password constraints.
But, if you want to persist this way, I recommend you to use Expresso to build your regular expressions.

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savbace · Answer 1 · 2013-02-11T00:07:00

Take a look on this discussion http://forums.asp.net/t/918584.aspx/1

Based on it you can build your regex. Something like this:
^(?=[^&]*\d)(?=[^&]*[a-zA-Z])(?=[^&]*[%$#^*@\-:]).{8,}$

[%$#^*@\-:] in this square brackets allowed special characters are defined.

If you want to learn more about regex I advice to look here The 30 Minute Regex Tutorial[^]

Thomas Daniels · Answer 2 · 2013-02-11T00:05:00

Solution 1

Hi,

This regular expression works fine for me:

((?=.*[a-zA-Z]+)(?=.*[0-9]+)(?=.*[^a-zA-Z0-9&]+))(?:.{8,})

Hope this helps.

Posted 11-Feb-13 0:05am

Thomas Daniels